Pump for organs



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H. 8v J. SCHWESINGER.

PUMP FOR ORGANS. I No. 522,184. I Patented June 26, 1894.

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(No Model.) 2 Sheets- Sheet 2. H. 85 J. SCI-1WESINGER. PUMP FOR ORGANS.

Patented June-26,1894.

..A Wjw M W gwuamfo z s w vtweowo UNITED STATES PATENT OFFICE HENRY SCI-IWESINGER AND JOHN SOHWESINGER, OF DETROIT, MICHIGAN.

PUMP FOR ORGANS.

SPECIFICATION forming part of Letters Patent No. 522,184, dated. June 26,1894.

Application filed February 20,1893. Serial No. 46 3.020. (No model.)

To to whom it may concern.- 4

Be it known that we, HENRY SOHWESINGER and JOHN Souwnsrncnn, citizens of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and usefullmprovement in Pumps for Organs, &c.; and we declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

Our invention has for itsobj ect an improved pump, more especially adapted for pumping organs, zeolians, and musical instruments of an analogous nature, whereby air may be pumped thereinto or exhausted therefrom, as may be desired, the invention being intended to provide such a device of superior simplicity, economy and efficiency.

Our invention, to these ends, consists of the construction, combination and arrangement of devices and appliances hereinafter specified and claimed, and illustrated in the accompanying drawings, in which- Figure 1 is a side elevation. Fig. 2 is a plan view. Fig. 3 is a cross section 011 the line ccw Figs.'1 and 2. Fig. 4 is a vertical section through one of the feeders. Fig. 5 is a vertical section on the line y-y, Fig. 2. Fig. 6 is a separate View of one of the arms connecting the bellows of the feeders to the crank of the driving, pulley.

In the drawings the pump is shown arranged to exhaust the air from the organ.

\Ve carry out our invention as follows:

In the drawingsArepresents a supporting frame of a suitable construction.

B B represent double acting, oscillating feeders, each feeder preferably consisting of a compound or double bellows B and B each communicating with an intermediate wind chest B as through communicating orifices b.

C denotes a common wind trunk, into which the feeders B B communicate. To this end the wind chest 13 of each of said feeders leads into said wind trunk, as through ports b.

D is a pipe or duct to connect the wind trunk O with the musical instrument,

not shown.

This pipe or duct communicates with said wind chest, 'as through a channel 0. The feeders B B are supported upon the frame A. The bellows B and B of the feeders, at their expansible ends are united to an arm E, as shown. This arm is constructed with lateral extensions E and E and with a longitudinal extension E.

F is a driving pulley provided with a crank F, with which crank the arms E E of the feeders B B are engaged. Each of said arms E E is constructed with an elongated slot, as shown at 6, into which the crank projects, the crank being held in engagement therein in any proper manner. The pulley F maybe driven by any desired power, as by an electric motor G, belted therewith by a belt G.

H denotes an exhaust chamber communicating with the wind trunk C, as by an orifice h controlled by a suitable valve H. This exhaust chamber is constructed on its outer wall with a series of small air exit orifices h, whereby the exit "of the air is so regulated as to prevent noise in its escape. A valve operating rod h provides for the opening of the valve H whenever desired. The bellows B and B of each of the feeders, have a jointed engagement with the extensions E and E of the arm E, as shown at c. The movable wing of each of the bellows has also a hinged engagement at its lower end, as shown at e It will be obvious from the drawings, that on the downward stroke of the crank F, the lower bellows B of each of the feeders will be expanded, while the upper bellows B of each of the feeders will be compressed, and vice versa. At the same time, as the crank performs its revolution, one of the feeders acts in. advance of the other so that a continuous pressure or suction of air is occasioned.

WVe have shown in the accompanying drawings but two feeders B B engaged upon the crank F, but we would definitely have it understood that any desired number of feeders may in a corresponding manner be so arranged as to be actuated by said crank to give any required amount of bellows power.

It will be observed that when the bellows is designed to be used to force air into the organ, instead of to exhaust air therefrom,

the valves of the bellows will be correspondin gly changed.

What we claim as our invention is 1. A pump for musical instruments having in combination a rotatable crank, multiple oscillating feeders arranged upon opposite sides of the crank and connected therewith, a common wind trunk with which said feeders communicate, each of said feeders being constructed with compound bellows having an intermediate wind chest leading into said wind trunk, and slotted arms E engaged with said crank and jointedly united with the movable leaves of the corresponding feeders respectively, substantially as set forth.

2. A pump for musical instruments having in combination, a supporting frame, multiple oscillating feeders engaged therewith, a rotatable crank connected with said feeders, a common Wind trunk with which the feeders communicate, each of said feeders being constructed with compound bellows and an intermediate communicating air chamber, the movable leaf of each bellows having a hinged engagement with the intermediate air chamher at its base, and arms E engaged with said crank and having a jointed connection with the opposite end of each of the movable leaves of the feeders, said feeders the one acting in advance of the other, substantiallyas set forth.

3. The combination of multiple oscillatory feeders, a wind trunk O communicating with said feeders, and an exhaust chamber H communicating with said wind trunk, said chamber provided with a valve controlling its communication with the wind trunk and constructed with orifices h, substantially as described.

4:. The combination with a rotatable crank, of a feeder constructed of bellows B, B and an arm E constructed with lateral extensions E, E connected With said bellows respectively, and with a longitudinal slotted arm E connected with said crank, substantially as described.

In testimony whereof we sign this specification in the presence of two witnesses.

HENRY SOIIWESIN GER. JOHN SCHWESINGER.

WVitnesses:

CHAs. F. SoHWANKRosKY, N. S. WRIGHT. 

